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Voir la version complète : Corrections on Heel and Toe


TheZ
31/01/2003, 00h34
Heel Toe shifting is, in fact, used for drifting. Revving up an engine is something a driver does anyway, when leaving a turn. The author of that explanation didn't even mention anything about shifting gears. If the driver only used the discussed technique to rev up his or her engine and then used a drifting technique, then his or her car would have lost traction because of the Heel Toe shifting technique. The driver uses the technique by first braking so the car is not entirely ejected from the turn as a result of centrifugal force, and then the driver would turn very sharply toward the direction of the turn. He or she would then disengage the clutch disc, shift down to a gear with more torque using the toe of his or her right foor while revving up the engine with his or her heel on the gas pedal. The driver would then re-engage the clutch disc fairly rapidly, the car would skid sideways, and the rear of the car would slide away from the center of the corner. This results in the fastest times through corners, because the drifting car doesn't need to accelerate when leaving the turn, because the wheels are already at high speeds; the wheels would simply have to regain traction. This is also fast because the sliding of the rear would point the car directly at the exit, allowing the car to even accelerate when the wheels regain traction.

To further explain the technique, the braking would, of course, shift the weight of the car forward, adhering to the law of inertia. This causes the rear wheels to be less tightly pressed against the surface of the road. Centrifugal force is one specific to racing. It is the force that causes difficulty for a car to change its direction with the front wheels, and it results from the car's momentum before the wheels changed the direction of the car. Because a car uses rubber tires, the car can grip the road to a specific degree without sliding. Of course, when a person wants to "peel out" in a manual-transmission car, he or she would want to shift into a low gear (not a higher gear, because lower gears have more torque) and apply the gas pedal before engaging the clutch disc. For a rear wheel drive car in a sharp turn, this usually applies well to the front wheels, but because the rear wheels might have more torque than the front wheels, they can spin and would lose their lateral traction. This is why a driver would use Heel Toe shifting. After braking, the driver would use the technique. The reason the car loses traction so well is that the car has its weight shifted forward, has its transmission shifted to a lower gear, and has the gas pedal applyied to spin the wheels, all at the same time.

Posted by Oliver Malik